Analysis

  • max time kernel
    149s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    07/02/2025, 05:19

General

  • Target

    JaffaCakes118_b36cd4b822dbcb20f49566deccbd1e11.exe

  • Size

    935KB

  • MD5

    b36cd4b822dbcb20f49566deccbd1e11

  • SHA1

    37e196dd4bd86d86dadbf17f0bcbc6667913ec53

  • SHA256

    485b3329b5c2bf40e1bab2be8807d7a4188d60a46e3a70b8fd55a26242fe1178

  • SHA512

    6671e6869df42caf466dcd8beedbb7aa6d15d91ca3c972d1d10599849a1f7db572d6949e0a238060125beb4c4e13a735d2e20d32712626bbd52e9f99ffdaae09

  • SSDEEP

    12288:eEdgu2FYiQTF79G6F1t1kAAWE6g17ev8WlpCtZznOVh88UVAoQi2CMte/V5B0Z6F:e1dIV8iDVG8K4iV3V78MM7inh3kh

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

192.168.1.79:1604

213.112.166.118:1604

Mutex

DC_MUTEX-7XQ1YGV

Attributes
  • gencode

    2U78e65S33pt

  • install

    false

  • offline_keylogger

    true

  • persistence

    false

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Darkcomet family
  • Modifies firewall policy service 3 TTPs 3 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 52 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b36cd4b822dbcb20f49566deccbd1e11.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b36cd4b822dbcb20f49566deccbd1e11.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1904
    • C:\Users\Admin\AppData\Local\Temp\vbc.exe
      C:\Users\Admin\AppData\Local\Temp\vbc.exe
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Windows security modification
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2504
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\vbc.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2912
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\vbc.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2660
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2752
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2628
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2016

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\vbc.exe

    Filesize

    1.1MB

    MD5

    34aa912defa18c2c129f1e09d75c1d7e

    SHA1

    9c3046324657505a30ecd9b1fdb46c05bde7d470

    SHA256

    6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

    SHA512

    d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

  • memory/1904-30-0x0000000073E40000-0x00000000743EB000-memory.dmp

    Filesize

    5.7MB

  • memory/1904-1-0x0000000073E40000-0x00000000743EB000-memory.dmp

    Filesize

    5.7MB

  • memory/1904-2-0x0000000073E40000-0x00000000743EB000-memory.dmp

    Filesize

    5.7MB

  • memory/1904-0-0x0000000073E41000-0x0000000073E42000-memory.dmp

    Filesize

    4KB

  • memory/2016-35-0x00000000000C0000-0x00000000000C1000-memory.dmp

    Filesize

    4KB

  • memory/2016-60-0x0000000000270000-0x0000000000271000-memory.dmp

    Filesize

    4KB

  • memory/2504-32-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-26-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-29-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-16-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-21-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-22-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-34-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-62-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-61-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-19-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-28-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-31-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-14-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-13-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-11-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-24-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2504-9-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-63-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-66-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2504-70-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB